Ortech Fire-Damper Fire damper made of galvanized steel and fabric for premium series fans

The fire dampers are metal parts(galvanized) with fabric. Fire Resistant: Up to 3 hours Compatible with: Below are some material list submitted to UL: spring 0.59 in. width,the force of one springs is not less than 4.495 lbs fusible link 165° F, 0.563 in. width fabric 0.118 in. thick, 12.484 lbs/ft3, environmental temperature 1000° C Compatible with: OD-8005, OD-9005, OD-1109, OD-1209, OD-15011, ODD-110